40143792 has 40 divisors (see below), whose sum is σ = 111683824. Its totient is φ = 12351744.

The previous prime is 40143773. The next prime is 40143799. The reversal of 40143792 is 29734104.

It is a happy number.

It is a super-2 number, since 2×40143792² = 3223048072278528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40143799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31543 + ... + 32790.

Almost surely, 2^40143792 is an apocalyptic number.

It is an amenable number.

40143792 is an abundant number, since it is smaller than the sum of its proper divisors (71540032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40143792 is a wasteful number, since it uses less digits than its factorization.

40143792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64357 (or 64351 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 40143792 is about 6335.9128781889. The cubic root of 40143792 is about 342.4045006978.

Adding to 40143792 its reverse (29734104), we get a palindrome (69877896).

The spelling of 40143792 in words is "forty million, one hundred forty-three thousand, seven hundred ninety-two".